Which economic reason was used to justify the rapid expansion of european colonies throughout the world between the 17th and 19th centuries

About how many european immigrants were processed at the facilities on ellis island

Space is not completely empty. there are small particles in space. what happens when these particles come together?

In 1944, the supreme court upheld the authority of the u.s. government to order the internment of a minority group in the interest of national security, even though there was no evidence that any members of this group were disloyal to the united states. should the same policy be applied today against u.s. muslims or muslim immigrants? why or why not? are these forms of internment different from native reservations? if so how? if not, why?